ELECTROPHOTOGRAPHIC PHOTORECEPTOR

PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor small in residual potential at low temperatures, low humidity, small in dark decay, stable in electric characteristics and capable of forming a superior image without fine white spots even if the charge generating material of a ch...

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Bibliographic Details
Main Authors SENOKUCHI TERUNORI, MAKINO KANAME, OSADA TAKAHIRO
Format Patent
LanguageEnglish
Published 29.09.1998
Edition6
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor small in residual potential at low temperatures, low humidity, small in dark decay, stable in electric characteristics and capable of forming a superior image without fine white spots even if the charge generating material of a charge generating layer is composed essentially of an azo pigment by incorporating titanium oxide having an average particle diameter of specified value or less and a polyamide in an undercoat layer. SOLUTION: This electrophotographic photoreceptor comprises the undercoat layer composed of the titanium oxide particles having an average primary particle diameter of <=25nm and a polyamide resin and the charge generating material of a charge generating layer is composed essentially of the azo pigment represented by formula I: A-N=N-D-N=N-B in which A is a coupler residue represented by formula II; B is a coupler residue having a divalent phenolic hydrocarbon group optionally same as A; D is a divalent group having a carbon atom linking to the azo group being a double bond-forming SP type; and in formula II, Q is an optionally substituted aromatic hydrocarbon divalent group or an optionally substituted heterocyclic divalent group.
Bibliography:Application Number: JP19970062973